5664278 has 8 divisors (see below), whose sum is σ = 8520672. Its totient is φ = 2824056.

The previous prime is 5664271. The next prime is 5664287. The reversal of 5664278 is 8724665.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×5664278² = 64168090522568, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5664271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3125 + ... + 4592.

It is an arithmetic number, because the mean of its divisors is an integer number (1065084).

Almost surely, 2^5664278 is an apocalyptic number.

5664278 is a deficient number, since it is larger than the sum of its proper divisors (2856394).

5664278 is a wasteful number, since it uses less digits than its factorization.

5664278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8086.

The product of its digits is 80640, while the sum is 38.

The square root of 5664278 is about 2379.9743696099. The cubic root of 5664278 is about 178.2576540523.

The spelling of 5664278 in words is "five million, six hundred sixty-four thousand, two hundred seventy-eight".